CVE-2026-99221 json
keys/trusted_keys: return immediately after TPM unseal failure
published 2026-11-02 6 d ago modified 2026-11-03 5 d ago also EUVD-2026-115263
- cvss
- —
- not scored
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 7%
- public exploits
- 0
- none known
Summary
In the Linux kernel, the following vulnerability has been resolved:
keys/trusted_keys: return immediately after TPM unseal failure
trusted_tpm_unseal() proceeds to pcrlock() when the TPM unseal operation fails. If pcrlock() succeeds, its return value overwrites the unseal error, causing key instantiation to succeed.
Return immediately when unseal fails to preserve the original error.
Patch / fix
- Linux Linux 5.15.224, 6.1.191, 6.6.161, 6.12.115, 6.18.60, 7.2.14, 7.3.1, 7.4-rc1
- linux Debian 13 6.12.115-1
- linux Debian 14 7.2.14-1
debian advisories DEBIAN-CVE-2026-99221
- kernel Azure Linux 3.0 6.6.161.1-1
azure linux advisories AZL-112541
Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT
- git.kernel.org/stable/c/4876f09ce222e140a73aad950882b3605440c935 commit
- git.kernel.org/stable/c/2d92a0f87c338a08367aff05edd1ade86da4ac8d commit
- git.kernel.org/stable/c/234d09bb3b3d84851d4b3246272addc30f3353eb commit
- git.kernel.org/stable/c/6e359d8cb8580b9874801dea930086effd4d9c62 commit
- git.kernel.org/stable/c/e55d48f21f591a9fe80d26b5fbd1912ea725d9e6 commit
- git.kernel.org/stable/c/63b19ec2863b2cb5279b746ecd3d6210b1a93945 commit
- git.kernel.org/stable/c/ed697a5f667435bbb1cedbe5bd9f300de645047d commit
- git.kernel.org/stable/c/f92d0ccb05bf9089072cb067dda0dffd5394c4ef commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-99221 updated cvss 3.3
kernel: kernel: invalid trusted key instantiation via unhandled TPM unseal failure
-
Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux 10 kernel Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-9 Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9, openshift/ose-rhel-coreos-10affected: no fix available “Fix deferred”
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8not affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).
Affected products
- Linux Linux
Classification
- Technology feeds
References
- git.kernel.org /stable/c/4876f09ce222e140a73aad950882b3605440c935
- git.kernel.org /stable/c/2d92a0f87c338a08367aff05edd1ade86da4ac8d
- git.kernel.org /stable/c/234d09bb3b3d84851d4b3246272addc30f3353eb
- git.kernel.org /stable/c/6e359d8cb8580b9874801dea930086effd4d9c62
- git.kernel.org /stable/c/e55d48f21f591a9fe80d26b5fbd1912ea725d9e6
- git.kernel.org /stable/c/63b19ec2863b2cb5279b746ecd3d6210b1a93945
- git.kernel.org /stable/c/ed697a5f667435bbb1cedbe5bd9f300de645047d
- git.kernel.org /stable/c/f92d0ccb05bf9089072cb067dda0dffd5394c4ef
Sources
- CVE List CVE-2026-99221
- NVD CVE-2026-99221
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.